Vue多个input框接连focus,blur事件导致页面抖动

<van-field
                  type="number"
                  v-model="row.completionRate"
                  name="completionRate"
                  placeholder="请输入"
                  :rules="[{ required: true,}]"
                  @focus="inputFocus($event)"
                  @blur="inputBlur($event)"
              />
  methods:{
    inputFocus(Event) {
      this.$emit('change',1);
    },
    inputBlur(e) {
      if(!e.relatedTarget || e.relatedTarget.className == 'el-input_inner')  {
        this.$emit('change',2);
      }
    }
}